Incobpobated



March'ZO, 1928.

T w. CASE TALKNG PICTURE MACHINE originl Filed July 24. 192e 12J; 1 0RBY W1 TNE'S S EYS l Hrm Reuma Mar. zo, 192e.`

' UNITED STATESv rnnonomi wxLLAnD oAsE, or AUBURN, maw` Your,Assreuon'ro AsE mnemon- LABonATonYJNconronA'rED, or AUBURN, New roux, A*eonronArIoN-or NEW YORK.

TALKING-PICTURE MACHINE. l.

riginal N0.1,638,393, dated August 9,1927, Serial No. 124,723, Aled July24, 1928. Application for remue nled october 4, V1921. serial no.223,984.

This invention ,relates to certain new and useful improvements intalking picture machines.

In the production or reproduction of a film record corresponding tosound wave variations, it is essential that the film should move inclose relation with the slit through which the film is exposed to lightrays, and

thelnain object of this invention is the production of a structure inwhich the film is -pre-ssed or held tightly against the track or tracksof the slit containing unit or structure, while at the same time theportion of the film constituting or adapted to constitute the soundrecordportion is not exposed to' frictional or sliding contact with themember or members Whichrmaintain the film against .the track or tracks,whereby the possibility of injuring the record is eliminated.

The maintenance of the sound record portion of the record element, as anegative, or a positive produced therefrom in uniform and smoothrelation with the supporting track,'is effect-ed bythe use of two shoes,or

in this illustration flanges disposed upon opposite sides of the soundrecord portion of said element, and bearing against thefilm, negative orpositive upon opposite sides of the Sound record', so as to effect thedesired result without Acontact of the shoes with the soundcrecordportion of said element- Other objects and advantages relate to thedetails of the structure and the parts thereof, all as will more fullyappear from the Y icture unit'ineluding a fixed .slit unit o'f.

esired construction. The replaceable talkin picture unit comprises abody section fincluding a flange -3, in this inv4picture machine, aportion stance extending at substantially right aninto openings inthe-Wall -1 ofthe moving picture machine.

The body sectionA 2- further includes longitudinally extending tracks'-5- and -'-6-.-, in this instance spaced apart and elevated above thecentral portion of the body `-2 and` longitudinally extending lateralguides -6-- and -7'.- disposed upon opposite sides of and elevated abovethe re-v spective tracks -.-5- and -6- and upon "which tracks'the film Ais adapted `to ride between the guides -36- and -7-.

One of these guides as -7- is' preferably laterally movable with respectto the body --2- s o as to tightly engage the adjacent edge ofthe filmAwand hold the opposite edge in contactA with the guide --tiw. rFor thisreason the ,guide -7-1- is formed Wit-h laterally extendingslots -8-adapted to receive screws -9- which extend into openings in the body,and as the strip 7 lies in substantial contact with the wall --1-, thiswall is formed with one ormore recesses l0-- adapted to receive coilsprings' -11- which bear against the outer edge of the guide -7- andtend to force it inwardly toward .the guide -36- so that the film willat all times be tightly continedbetween the guides.

The track --5- in this illustration is formed with a recess within whichthere is secured by Acementing or otherwise, a slit unit -12- or amember containing an elongated extremely narrow slit -13-, the body --2-being formed with a comparatively' large opening underlying the slot sothat vlight rays from a suitable source may pass thi-ou h the body andthe slot to the film. This slit unit 'may preferably be constructed of abase `as glass, having deposited thereon in vaporplate -14'- of atransparent material, such izedformor in the form of minutely subdividedparticles an extremel thin layer glass -16- is then securedby such amate- \-15- of opaque material, suc l as ay metal,-

rial as. Canada balsam permanently in place At a vpoint overlying theslit 13 the base over-fthe slot -13, and is preferably of a of thegroove or channel -2- is formed size substantially equal to the size ofthe base with an opening 27 here shown as of circu- -plate v-11- so asto form a .symmetrical lar form, altho theform--and size may' be 5 unit.f varied. The shoesv are supported 70 This -unit is placed in therecessformed in from the plate +20- by means of pins the track -5- adapted toreceive it, and the '-31- secured to the shoes and extending recess isreferabl of such'a size that the through the plate in a-y slidablemanner, slitl unit ts it, an the surface of the cover springs 22-beingmounted on the ins beglass -16- is fiush` with the surface of theneath the shoes and the plate so t at the 75 track.l shoes are urged byrespective springs toward This slit unit constitutes a] means for limthetracks -5- and 6 toresiliently hold itin the area of therecordfelement', exposed the film in contact with the tracks. to lghtrays at any timelztof' anV elongated The telescoping 'tubes 18-I and -19Anarrowline so that there continuously passes are 4slidably securedtogether by means of 80 to thefilm a slit4 of lighter a narrow elonstud2fsecured to the' tube 4418- and gated line of']ig}v1f, qf. fV lextending outwardly therefrom! and posi- In order to proventi-theaccumulationl of tioned in an elongated slot-25- in the dirt and foreignmatterk at the; juncturevof tube 1Q- l y 20 the guide -36- and track 5at a'vpoint With this construction the film is held in 35 adjacent theslit -13--, the guide -36- is tightcontact with the tracks -'-5- and--6-V cut away at its inner edge so'as to forma latand thelongitudinal'` channel 'or groove eral recess --17- which preferablyextends -26--' in. the shoe 2lpermits the pasvrsome distance uponopposite sides of the slit sage of the sound record beneath the shoel'unit l2- and the floor of this recessis without friction'al orsliding' contact vof the 90 flush with and forms a continuation/of theshoe with the. effective portion of the sound track -5- so that there isno angular part record, while they opening 27- through at pointsadjacent the slit unit tofcollect dirtthe base of the 'channel org-roove at .a point v or foreign matter. registering with or overlyingthe slit 13- Means is provided for holding'the film in permits thepassage of light rays' tc and from 95 tight contact with the tracks 5and the film. v i j -6-, and in this illustration that' means The shoe.-22- and the fiange or shoe takes the form of telescoping tubes--lS--50- Contact with opposite edges of the and -l9'-, one ofiwhich as 18 isconrecord element and hold it in contact with nected at its base byscrews or otherwise to the respective tracks 6- and -5-, while 100 thewall -1 of the moving Vict'ure mathe flange or shoe 51 is in effect athird chine, and the other section, suc as' -19- shoe disposed betweenthe two first-'named carries at its forward end a plate -20-, shoes andspaced from the shoe 50- a disw'hich plate in turn carries a pluralityof., in tance substantially equal to the width of the 40 this instancetwo, shoes -21-, one for presssound record portion of the element andas- 105` ing the flminto contact with each of the sisting in holding therecord element in conftracks '54- and ,-6-, and the shoe which tact withthe track --5-. is adapted to hold the film in contact with 'The novelfeatures of the structure here the track -.5- is formed with alongitudidisclosed, except those specifically relating nal groove -26-extending throughoutsubto the longitudinal groove -2 6` in the shoe 110istantially the entire length of the shoeand forming in effect two shoes-'50- and registering with or overlying the narrow `-51- and theopeningY 27 in the base :portion of the film which contains the of saidgroove or channel in combination v corresponding to sound wave variawithvthe other cooperating parts of, the.

wqtions'so that theportion b of the film in structure are claimed in mycopending ap-` 115 l f passing; beneath the shoe -21-,- does notplication Serial No. 95,593 filed March '18, l tact with the shoe, butthe flanges '-50 1926, for talking moving picture machines, andupon/opposite sides `of the and altho I have shown and describedia'speor channel bear-against the cie form of structure as constituting aperf filmattheopposite of thesound record haps preferred embodiment ofthis inven- 120 hold in'tiglit contact with the tion, 'I do not desireto restrict myself to the @details of the structureortheform thereof,an'ges and -'-51 y constitute asvarious chan es and modifications maybefiniefect' shoesspa'ced .apart a distance submade withinv ghe scope ofthe 'appended stantiallyequaltothe v width of the `sound claims. 125"l''fecord portionof said element and bearing' -I claim :l v

against the element upon opposite sides o 1. A talking picture aparatus'for'use in` said sound record ortion to maintain the connection[with a film avin a narrow yrecord element in at and uniform contact'soundrecord near one edge of t e-lmcox'n-- l5 with the 1track-pli. .yprising a. body portion havngtracks at op- 130 posite sides upon whichthe film is adapted `to ride, and a shoe for holding the filrn incontact withl one of said tracks and having an elongated groove adaptedto overliethe sound record portion of the film, a slit unit in thelast-named track, and said `shoe having an opening Yleading to thegroove and registering with said slit unit.

2. A talking picture apparatus for use in connection With a film havingoradapted to have a narrow sound record near one edge of the filmcomprising a body portion having tracks at opposite sides upo'nwhich thefilm is'adapted to ride and a shoe for holding 'the film in contact withone of said tracks and having an elongated groove adapted to overlie thesound record portion of the film so as not to contact with this portionof the film, the ends of the side Wall upon opposite sides of the groovecontacting with the film near opposite sides of the sound record, a slitunit in the last-named track and said shoe having an opening leading tothe groove and registering with said slit unit to permit the passage oflight rays.

3. In an apparatus for producing or reproducing sound pictures inconnection with a film having or adapted yto have' a narrow sound recordnear one edge of the film, a body portion having tracks at oppositesides upon which the film is adapted to ride, and a shoe for holding thefilm in Contact with one of said tracks and having an elongated grooveadapted to overlie the sound record yportion of the film, meanspermitting the passage of a line of light to the film through the base,and said shoe having an opening leading to the groove and registeringwith said means.

4:. In an apparatus for producing or reproducing sound pictures inconnection With a film having or adapted to have a narrow sound recordnear one edge of the film, a

body portion having tracks at opposite sides upon Whichthe film isadapted to ride, and a shoe for holding the film in contact with one ofsaid tracks and having an elongated groove adapted to overlie the soundrecord portion of the film so as not to contact with this portion of thefilm, the flanges or shoes upon opposite sides of the groove adapted toContact with the iilm near opposite sides of the sound record, meanspermltting the passage of a line of light to a film upon said tracksandV said shoe having an opening leading to the groove and registeringwith said means to permit the passage of light rays.

5. In an apparatus for producing or reproducing sound pictures, a basehaving a pair of spaced tracks over which the record element is adaptedto move', means for holding the sound record portion of said element incontact with one of said tracks comprising a pair of spaced shoesoverlying the said track and contacting with the element on oppositesides of the sound record portion of the same, andmeansiiermitting thepassage of a line of light to thevelement.

6. In an apparatusvfo'r producing or reproducing sound pictures, a basehaving a pair of spaced tracks over which the record element is adaptedto move, means for holding thesound record portion of said element incontact with one of said tracks comprising a pair of spaced shoesoverlying the said track and contacting with the element on oppositesides of the sound record portion of the same, means permitting thepassage of a line of klight to the element, and an additional shoe forholding the other edge of a record element in contact with the othertrack. In Witness whereof` I have hereunto set my hand this 29th day ofSeptember, 1927.

THEoDoRE WILLARD CASE.

